отменяет регистрацию зарегистрированной области памяти (deregisters a registered memory region.)
Имя (Name)
rdma_dereg_mr - deregisters a registered memory region.
Синопсис (Synopsis)
#include <rdma/rdma_verbs.h>
int rdma_dereg_mr (struct ibv_mr *mr);
Аргументы (Arguments)
mr A reference to a registered memory buffer.
Описание (Description)
Deregisters a memory buffer that had been registered for RDMA or
message operations. A user should call rdma_dereg_mr for all
registered memory associated with an rdma_cm_id before destroying
the rdma_cm_id.
Возвращаемое значение (Return value)
Returns 0 on success, or -1 on error. If an error occurs, errno
will be set to indicate the failure reason.
Примечание (Note)
All memory registered with an rdma_cm_id is associated with the
protection domain associated with the id. Users must deregister
all registered memory before the protection domain can be
destroyed.
Смотри также (See also)
rdma_cm(7), rdma_create_id(3), rdma_create_ep(3),
rdma_destroy_id(3), rdma_destroy_ep(3), rdma_reg_msgs(3),
rdma_reg_read(3), rdma_reg_write(3), ibv_reg_mr(3),
ibv_dereg_mr(3)
